Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8002052 | Particle-matrix composite drill bits with hardfacing | John H. Stevens, James L. Overstreet, Kenneth E. Gilmore | 2011-08-23 |
| 7677338 | System, method, and apparatus for passive and active updrill features on roller cone drill bits | James L. Overstreet, Robert J. Buske | 2010-03-16 |
| 7654346 | Steel tooth drill bit with improved tooth breakage resistance | James L. Overstreet, Robert J. Buske, Kenneth E. Gilmore | 2010-02-02 |
| 7240746 | Bit gage hardfacing | James L. Overstreet, Robert J. Buske, Rudolf Carl Pessier | 2007-07-10 |
| 6923276 | Streamlined mill-toothed cone for earth boring bit | James L. Overstreet, Rudolf Carl Pessier, Alan J. Massey | 2005-08-02 |
| 6253862 | Earth-boring bit with cutter spear point hardfacing | James L. Overstreet, Ronald L. Jones, Alan J. Massey, Trevor M. McAninch | 2001-07-03 |
| 6206115 | Steel tooth bit with extra-thick hardfacing | James L. Overstreet, Ronald L. Jones, Trevor M. McAninch | 2001-03-27 |